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TGV World Speed Record
The TGV (''Train à Grande Vitesse'', French for "High-Speed Train") holds a series of land speed records for rail vehicles achieved by SNCF, the French national railway, and its industrial partners. The high-speed trials are intended to expand the limits of high-speed rail technology, increasing speed and comfort without compromising safety. The current world speed record for a commercial train on steel wheels is held by the French TGV at 574.8 km/h (357.2 mph), achieved on 3 April 2007 on the new LGV Est. TGV 001 The TGV 001 was an experimental gas turbine-electric locomotive-powered trainset built by Alstom to break speed records between 250–300 kilometres per hour. It was the first TGV prototype and was commissioned in 1969, to begin testing in 1972. It achieved a top speed of on 8 December 1972. Record of 1981 Operation TGV 100 Operation TGV 100, referring to a target speed of 100 metres per second (360 km/h, 224 mph), took place on 26 Fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LGV Atlantique
The LGV Atlantique (French: ''Ligne à Grande Vitesse''; English: Atlantic high-speed line) is a high-speed rail line running from Paris (Gare Montparnasse) to Western France. It opened in 1989–1990 and comprises two stations: Massy TGV station and Vendôme-Villiers-sur-Loir TGV station. It divides into two parts at Courtalain, one going westward to Le Mans (towards Brittany and Pays de la Loire), the second one going southwestward to Tours (and onward towards Nouvelle-Aquitaine). Both branches have been extended, by the LGV Bretagne-Pays de la Loire and the LGV Sud Europe Atlantique. Route The line leaves Gare Montparnasse to cross Paris's southern suburbs, partly under the Coulée Verte. This is a tunnel above which footpaths and recreational areas have been created, to reduce the effect of the LGV running through the area. The line at this point follows the route of the former railway line from Paris to Chartres. TGVs coming from the north or southeast of France via the LGV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radius
In classical geometry, a radius ( : radii) of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the latin ''radius'', meaning ray but also the spoke of a chariot wheel. as a function of axial position ../nowiki>" Spherical coordinates In a spherical coordinate system, the radius describes the distance of a point from a fixed origin. Its position if further defined by the polar angle measured between the radial direction and a fixed zenith direction, and the azimuth angle, the angle between the orthogonal projection of the radial direction on a reference plane that passes through the origin and is orthogonal to the zenith, and a fixed reference direction in that plane. See also *Bend radius *Filling radius in Riemannian geometry *Radius of convergence * Radius of convexity *Radius of curvature *Radius of gyration ''Radius of gyration'' or gyradius of a body about the axis of r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dangeau
Dangeau () is a commune in the Eure-et-Loir department in northern France. On 1 January 2018, the former communes of Bullou and Mézières-au-Perche were merged into Dangeau. 29 September 2017 Population See also *Communes of the Eure-et-Loir department
The following is a list of the 365 communes of the Eure-et-Loir department of France.
The communes cooperate in the following intercommunalities (as of 2020):
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SNCF TGV Atlantique
The TGV Atlantique (TGV-A) is a class of high-speed trains used in France by SNCF; they were built by Alstom between 1988 and 1992, and were the second generation of TGV trains, following on from the TGV Sud-Est. 105 bi-current sets, numbered 301-405, were built for the opening of the LGV Atlantique. Entry into service began in 1989. They are long and wide. They weigh , and are made up of two power cars and ten carriages with a total of 485 seats. They were built for a maximum speed of with total power under 25 kV. From 2015 onwards, many of these units have been scrapped with only 28 still in service in 2022. Most of the remaining fleet have been refurbished and mainly see service on slower trains between Paris and Bordeaux that use only a portion of the LGV Atlantique and LGV Sud Europe Atlantique. Fast through services on the route are now operated by the higher capacity TGV "Océane". Modified unit 325 set the world speed record in 1990 on the new LGV before its o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brake
A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction. Background Most brakes commonly use friction between two surfaces pressed together to convert the kinetic energy of the moving object into heat, though other methods of energy conversion may be employed. For example, regenerative braking converts much of the energy to electrical energy, which may be stored for later use. Other methods convert kinetic energy into potential energy in such stored forms as pressurized air or pressurized oil. Eddy current brakes use magnetic fields to convert kinetic energy into electric current in the brake disc, fin, or rail, which is converted into heat. Still other braking methods even transform kinetic energy into different forms, for example by transferring the energy to a rotating flywheel. Brakes are generally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electricity
Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwell's equations. Various common phenomena are related to electricity, including lightning, static electricity, electric heating, electric discharges and many others. The presence of an electric charge, which can be either positive or negative, produces an electric field. The movement of electric charges is an electric current and produces a magnetic field. When a charge is placed in a location with a non-zero electric field, a force will act on it. The magnitude of this force is given by Coulomb's law. If the charge moves, the electric field would be doing work on the electric charge. Thus we can speak of electric potential at a certain point in space, which is equal to the work done by an external agent in carrying a unit of p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction (engineering)
Traction, or tractive force, is the force used to generate motion between a body and a tangential surface, through the use of dry friction, though the use of shear force of the surface is also commonly used. Traction can also refer to the ''maximum'' tractive force between a body and a surface, as limited by available friction; when this is the case, traction is often expressed as the ratio of the maximum tractive force to the normal force and is termed the ''coefficient of traction'' (similar to coefficient of friction). It is the force which makes an object move over the surface by overcoming all the resisting forces like friction, normal loads(load acting on the tiers in negative 'Z' axis), air resistance, rolling resistance, etc. Definitions Traction can be defined as: In vehicle dynamics, tractive force is closely related to the terms tractive effort and drawbar pull, though all three terms have different definitions. Coefficient of traction The ''coefficient of traction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerodynamics
Aerodynamics, from grc, ἀήρ ''aero'' (air) + grc, δυναμική (dynamics), is the study of the motion of air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics. The term ''aerodynamics'' is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving Aircraft#Heavier than air – aerodynes, heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Railroad Switch
A railroad switch (), turnout, or ''set ofpoints () is a mechanical installation enabling railway trains to be guided from one track to another, such as at a railway junction or where a spur or siding branches off. The most common type of switch consists of a pair of linked tapering rails, known as ''points'' (''switch rails'' or ''point blades''), lying between the diverging outer rails (the ''stock rails''). These points can be moved laterally into one of two positions to direct a train coming from the point blades toward the straight path or the diverging path. A train moving from the narrow end toward the point blades (i.e. it will be directed to one of the two paths, depending on the position of the points) is said to be executing a ''facing-point movement''. For many types of switch, a train coming from either of the converging directions will pass through the switch regardless of the position of the points, as the vehicle's wheels will force the points to move. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Courtalain
Courtalain () is a former commune in the Eure-et-Loir department in northern France. On 1 January 2017, it was merged into the new commune Commune nouvelle d'Arrou Commune nouvelle d'Arrou (, literally ''New Commune of Arrou'') is a commune in the department of Eure-et-Loir, north-central France. The municipality was established on 1 January 2017 by merger of the former communes of Arrou (the seat), Boisg .... 25 May 2016 Population See also *Communes of the Eure-et-Loir departmentReferences Former communes of Eure-et-Loir {{EureLoir-geo-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tours
Tours ( , ) is one of the largest cities in the region of Centre-Val de Loire, France. It is the Prefectures in France, prefecture of the Departments of France, department of Indre-et-Loire. The Communes of France, commune of Tours had 136,463 inhabitants as of 2018 while the population of the whole functional area (France), metropolitan area was 516,973. Tours sits on the lower reaches of the Loire, between Orléans and the Atlantic Ocean, Atlantic coast. Formerly named Caesarodunum by its founder, Roman Augustus, Emperor Augustus, it possesses one of the largest amphitheaters of the Roman Empire, the Tours Amphitheatre. Known for the Battle of Tours in 732 AD, it is a National Sanctuary with connections to the Merovingian dynasty, Merovingians and the Carolingian dynasty, Carolingians, with the Capetian dynasty, Capetians making the kingdom's currency the Livre tournois. Martin of Tours, Saint Martin, Gregory of Tours and Alcuin were all from Tours. Tours was once part of Tour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
